#30636B
Closest named color: Dark Aqua (#05696B). oklch(46.8% 0.056 208.8), rgb(48, 99, 107).
Aa
White text reads best on this color (6.72:1).
About this color
#30636B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.056 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.027 away. White text reads best on it, at 6.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #30636B |
| RGB | rgb(48, 99, 107) |
| HSL | hsl(188, 38%, 30%) |
| OKLCH | oklch(46.8% 0.056 208.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #30636B | 6.72:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #30636B | 3.12:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #30636B text on white | 6.72:1 | AA | Lc 83.0 | Fine for body text |
| #30636B text on black | 3.12:1 | AA large text | Lc -18.9 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CEDCDE
oklch(88.4% 0.015 207.1)
-
Step 300
300
#ADC6CA
oklch(80.9% 0.028 208.3)
-
Step 400
400
#81A9AF
oklch(70.8% 0.044 207.6)
-
Step 500
500
#61939B
oklch(63.1% 0.055 208.5)
-
Step 600
600
#467D86
oklch(55.5% 0.06 209.1)
-
Step 700
700 (this color)
#30636B
oklch(46.8% 0.056 208.8)
-
Step 800
800
#2E565D
oklch(42.7% 0.047 210)
-
Step 900
900
#2A474C
oklch(37.7% 0.036 209.6)
-
Step 950
950
#192A2C
oklch(27.1% 0.023 205.2)
#30636B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5B606C | 0.053 |
| Deuteranopia (no green cones) | #52596B | 0.048 |
| Tritanopia (no blue cones) | #046765 | 0.030 |
| Achromatopsia (no color) | #5C5C5C | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30636B
#30636B
oklch(46.8% 0.056 208.8)
- #774E48
#774E48
oklch(46.8% 0.057 28.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #30636B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.027
- Petrol #005F6A ΔE 0.031
- Dark Green Blue #1F6357 ΔE 0.038
- Slate #516572 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.043
- Deep Turquoise #017374 ΔE 0.049
- Dark Aquamarine #017371 ΔE 0.050
- Denim #3B638C ΔE 0.057
Use #30636B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.